Meyerding Grade


Categorises severity of spondylolisthesis based upon measurements on lateral  X-ray of the distance from the posterior edge of the superior vertebral  body to the posterior edge of the adjacent inferior vertebral body. This  distance is then reported as a percentage of the total superior  vertebral body length:

  • Grade 1 is 0–25%
  • Grade 2 is 25–50%
  • Grade 3 is 50–75%
  • Grade 4 is 75–100%
  • Over 100% is Spondyloptosis, when the vertebra completely falls off the supporting vertebra